Acadia

Covering most of Mount Desert Island and other coastal islands, Acadia features the tallest mountain on the Atlantic coast of the United States, granite peaks, ocean shoreline, woodlands, and lakes. There are freshwater, estuary, forest, and intertidal habitats.

Arches

This site features more than 2,000 natural sandstone arches, including the Delicate Arch. In a desert climate millions of years of erosion have led to these structures, and the arid ground has life-sustaining soil crust and potholes, natural water-collecting basins. Other geologic formations are stone columns, spires, fins, and towers.

Bryce Canyon

Bryce Canyon is a giant natural amphitheatre along the Paunsaugunt Plateau. The unique area has hundreds of tall hoodoos formed by erosion. The region was originally settled by Native Americans and later by Mormon pioneers.

Canyonlands

This landscape was eroded into canyons, buttes, and mesas by the Colorado River, Green River, and their tributaries, which divide the park into three districts. There are rock pinnacles and other naturally sculpted rock, as well as artifacts from Ancient Pueblo Peoples.

Capitol Reef

The park's Waterpocket Fold is a 100-mile (160�km) monocline that shows the Earth's geologic layers. Other natural features are monoliths and sandstone domes and cliffs shaped like the United States Capitol.